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commandlinefu.com is the place to record those command-line gems that you return to again and again.

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News

2011-03-12 - Confoo 2011 presentation
Slides are available from the commandlinefu presentation at Confoo 2011: http://presentations.codeinthehole.com/confoo2011/
2011-01-04 - Moderation now required for new commands
To try and put and end to the spamming, new commands require moderation before they will appear on the site.
2010-12-27 - Apologies for not banning the trolls sooner
Have been away from the interwebs over Christmas. Will be more vigilant henceforth.
2010-09-24 - OAuth and pagination problems fixed
Apologies for the delay in getting Twitter's OAuth supported. Annoying pagination gremlin also fixed.
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Functions

Enable passwordless login

Terminal - Enable passwordless login
passwd -d $USER
2010-05-07 07:15:09
User: TheFox
Functions: passwd
-3
Enable passwordless login

-d, --delete

Delete a user?s password (make it empty). This is a quick way to disable a password for an account. It will set the named account passwordless.

Alternatives

There is 1 alternative - vote for the best!

Terminal - Alternatives
sudo usermod -p $(mkpasswd '') user_id
2010-05-06 20:39:58
User: ckclark
Functions: sudo usermod
-1

It is safe when there is

"PermitEmptyPasswords no"

in /etc/ssh/sshd_config.

This command is useful when there is no need to have a password.

Know a better way?

If you can do better, submit your command here.

What others think

Voted down because it's an incredibly bad idea. I never recommend anyone do this, ever.

Comment by SuperFly 241 weeks and 1 day ago

Voted up because I'm here to learn commands, not to be taught what to think.

Comment by snaguber 239 weeks and 5 days ago

Your point of view

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